Driving end for looms



I 11 644,374 192? H. D. HATHAWAY 9 DRIVING END FOR LOOMS Filed Nov. 11. 1926 v 2 Sheets-Sheet. 1

ENVENTOR M/W a WWW? BY f;

ATTORNEY Qct. 4,1927. 1,644,374

H. E). HATHAWAY DRIVING END FOR LOOMS Filed Nov. 11. 1926 2 Sheets-Sheet 2 INVENTOR I H5 2 6 4mm ymmw/ Gfwv ATTORNE Patented Oct. 4,1927.

A mass, stares HARRY 'n. Harlin-WAY, or FALL RIVER, AssAo s 'r rs F" .nnrvrne END non Looms.

i Application filed N 'oveniber 11, 1926. SerialNo. 147,793. v

, invention relates to improvement's in driving ends of the character employed with looms particularly. of the Draper type. V

w The driving endfiiowiii usepo'ssesfsessevral disadvantages, area of whi hw ll be here noted. In the v first place th'ej faot that the pulley wheel is Keyed directly tothe crank shaft tlifoug'lrits hub rendered 1t :11- ways necessary in order to dismount the pub ly wheel to remove theentire crank shaft from the loom when it would. be taken to the machine shop and there the pulley wheel'dlslodged therefrom. To accomplish this, closing down of the machinery was necessary .15 and the warp slackened, many ends being broken during this operation. Another disadvantage inheres in that the pulley band andbrake wheel are separately keyed to the crankshaft .and spaced apart, an arrangementwhich gives rise to rocking with con sequent wearing away of the crankshaft whereby it is rendered defective if'not useless. Every time a shaft is removed and refitted, re-timing of "the loom is made neces sary which means loss of time. Although beset with these drawbacks, attempts at chang;

ing the present structure have not yet met with commercial success.

It is an object of my invention to provlde a driving end for looms or allied machines wherein the pulleyband, gear and brake.

wheel arejoined to a common hub and yet are easily disassembled with little or no loss of time.

Another object of my invention is to provide a driving end for looms wherein pulleys of different'diameters for varying the speed may be easily removed and applied without necessitating the removal of the crankshaft and the re-timin oftheloom.

A further ob]ect of my invention is to rovid-e a driving end wherein the pulley band and brake wheel are so disposed on the crankshaft that rocking is prevented thus saving the shaft from wearing.

A still further object of my invention to provide a .driving end wherein the use of set screws which contact with the crankshaft is eliminated Other objects and advantages will appear from the following detailed description.

I attain these objects by the mechanism which-e K Fig. 11 a crass-spasm ties at member.

as Fig. 1 looking iii the catamaran illustrated the It is to be understood that the structure is to be used on a crankshaft and the disposition of a crankshaft in the loom construction belng known its illustration in combination with the loom is deemed unnecessary.

- In the drawings the hub 1 is mounted on. I

the crankshaft 2. The mounting is made secure against lost motion by shrinking the hub 1 onto the shaft and a further grip is afforded by the. key 3'.

Integrally secured to the hub 1 is the spider member 4 positioned about midway of the length of the hub. Attached to the opposite sides of the spider 4: throughthe mediumof the bolts 5 which pass through the openings 12 in thespider are the pulley band 6 and the split gear 7.. Neither the pulley band or split gear have an enlarged hub portion and the point of s'ecurement is on the spider. It will be observed that the dismounting of the pulley band and the brake wheel may be achieved, without remove ing the crankshaft from the loom since these members are, not keyed to the shaft. As shown with greater clarity in Fig. 2 the split gear 7 is constituted of two halves which facilitates its mounting and dismounting. The hub 1 is'of such length as to accommodate the brake or hand wheel 8 which is attached thereto through its hub 9 by means of a half moon key 1() and set screw 11'.

When pulley band, split gear and brake wheel are juxtaposed as shown in Fig. l they are allsecured to a common member-which itself in turn is keyedonto the crankshaft. A

The danger of rocking'on and wearing of the shaft as frequently occurs with the structures now in use where the pulley band and brake wheel are separately secured their own hub members "directly to the crankshaft is here avoided. l The driving iiiiit thus produced is firm, simple in stri'icture, easily dismounted, eliminates use of set screws which contact crankshaft and is d effective'and reliable in operation.

The mode of operation is apparent from J: an inspection of the drawings there being no drastic echa'ngein the mode of operation of driving ends but rather in the construction of arts.

he materialofwhich 1 is made may be cast iron or any other suitable m'ate. ma

All that has been said ebe've in the description of my [preferred embodiment is offered by Wayof illustration and'not limitation. I donot wish to be limitedtothe exactstructure offthejpreferred embodiment "s'hown'and described, or to "any'particular material-used in the construction of parts,

. v tir'to theidesign of pa rts,"lbut desire Protection as aglalnst any variations in structure which uti zethe prlnclple of my nvention ff.and?fall"within the purview of my inv tion and are within the spirit and scope of the following claim.

The invention havlng been set forth, what I clalm as new and useful is as follows:

In combination with a loom, a crankshaft, a driving unit on said crankshaft, said driving unit comprising'a hub member having a spider member centrally disposed thereon, said spider member having a ledge "on the inner side thereof, a gear member havinga channel on its side contacting said spidermembensaid ledge being received within said channel, a pulley band, and bolt means for securing said pulley band and said gear member itosaid'spider member, a brake wheel, said hub member being of sufficient length to accomm'odatethe pulley band, gear member and the brake wheel, p I, t

Signed at -Fall' River, in the county of Bristol, State of Massachusettsfthis ninth day of November, 1926'.

' HARRY D. HLATHAWAYQ 

